Outlook 2000

  1. Start Registry Editor.
  2. Locate and then click the following registry key: HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Outlook\Security\OutlookSecureTempFolder
  3. On the Edit menu, click Modify, and then add the following registry value: Value data: <Path/name of folder that you want to use>

Note: You may have to manually create this registry key if it does not already exist on the system.

If Outlook is installed on a terminal server, use the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\MICROSOFT\Office\9.0\Outlook\SECURITY\OutlookSecureTempFolder

Outlook 2003


  1. Create a folder on C:\ called temp0
  2. Click Start, click Run, type regedit, and then click OK.
  3. Locate and then click the following registry key: HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Security\
  4. In the right pane, double-click OutlookSecureTempFolder.
  5. In the Value Data field, type C:\temp0\ and then click OK.
  6. Exit Registry Editor.
  7. Restart the computer.

Outlook 2010


  1. Click My Computer, and then double-click drive C.
  2. On the File menu, click New, and then click Folder.
  3. Name the folder temp0.
  4. Click Start, click Run, type regedit, and then click OK.
  5. Locate and then click the following registry key: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Security\
  6. In the right pane, double-click OutlookSecureTempFolder.
  7. In the Value Data field, type C:\temp0\ and then click OK.
  8. Exit Registry Editor.
  9. Restart the computer.